[lttng-dev] Need help in converting trace data into CTF

Mathieu Desnoyers mathieu.desnoyers at efficios.com
Thu May 16 14:52:01 EDT 2019

----- On May 16, 2019, at 1:42 AM, Ravindra Kumar Meena rmeena840 at gmail.com wrote:

> Hi LTTng developers,
> I have been selected at GSoC 2019 with organization RTEMs. My project is [
> https://devel.rtems.org/ticket/3696 | https://devel.rtems.org/ticket/3696 ]

> The objective of the project is to convert the trace data into CTF. The trace
> data is already generated by the system. All that is left is to convert the
> trace data into CTF. I am interested in CTF because I want to send it to trace
> compass for analysis.

> Any idea how can I achieve this?

If you intend to produce CTF traces natively from the target, you will want to
look into the barectf project [1].

However, if your goal is to do a post-processing phase to convert traces from
some existing format to CTF, you will want to look into the Babeltrace project [2]
master branch which is in preparation for Babeltrace 2.0. The approach here
would be to create a Babeltrace 2 source plugin which reads your trace format into
the Babeltrace 2 intermediate representation by using the APIs exposed to
plugins by Babeltrace 2. Babeltrace 2 has a generic CTF sink which can serialize
the resulting trace intermediate representation into CTF.



[1] https://github.com/efficios/barectf 
[2] https://diamon.org/babeltrace/

> --
> Ravindra Kumar Meena ,
> B. Tech. Computer Science and Engineering,
> [ https://www.iitism.ac.in/ | Indian Institute of Technology (Indian School of
> Mines) ] , Dhanbad

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Mathieu Desnoyers
EfficiOS Inc.

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